<template>
  <div id="app">
    <!-- 面包屑 -->
    <el-breadcrumb separator="/">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片式图 -->
    <el-card>
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input
            placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getGoodsList"
          >
            <el-button
              slot="append"
              icon="el-icon-search"
              @click="getGoodsList"
            ></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="goAddpage">添加商品</el-button>
        </el-col>
      </el-row>

      <!-- table表格区域 -->
      <el-table :data="goodsList" style="width: 100%" border stripe>
        <el-table-column type="index" width="width"> </el-table-column>
        <el-table-column label="商品名称" prop="goods_name" width="width">
        </el-table-column>
        <el-table-column label="商品价格(元)" prop="goods_price" width="96px">
        </el-table-column>
        <el-table-column label="商品重量" prop="goods_weight" width="70px">
        </el-table-column>
        <el-table-column label="创建时间" prop="add_time" width="140px">
          <template slot-scope="scope">
            {{ scope.row.add_time | dateFormat }}
          </template>
        </el-table-column>
        <el-table-column label="操作" width="130px">
          <template slot-scope="scope">
            <el-button
              type="primary"
              icon="el-icon-edit"
              size="mini"
            ></el-button>
            <el-button
              @click="removeByid(scope.row.goods_id)"
              type="danger"
              icon="el-icon-delete"
              size="mini"
            ></el-button>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-size="queryInfo.pagesize"
        :page-sizes="[5, 10, 15, 20]"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
        background
      >
      </el-pagination>
    </el-card>
  </div>
</template>

<script>
export default {
  name: 'List',
  data() {
    return {
      // 查询参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10,
      },
      // 商品列表数据
      goodsList: [],
      // 总数据、用来实现分页
      total: 0,
    };
  },
  created() {
    this.getGoodsList();
  },
  methods: {
    // 根据分页获取对应的商品列表
    async getGoodsList() {
      const { data: res } = await this.$http.get('goods', {
        params: this.queryInfo,
      });

      if (res.meta.status !== 200) {
        this.$message.error('获取商品列表失败');
      } else {
        this.$message.success('获取商品列表成功');
        this.goodsList = res.data.goods;
        this.total = res.data.total;
      }
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize;
      this.getGoodsList();
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage;
      this.getGoodsList();
    },
    // 删除按钮触发的函数
    async removeByid(id) {
      const confirmResult = await this.$confirm(
        '此操作将永久删除该商品, 是否继续?',
        '提示',
        {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning',
        }
      ).catch(err => err);
      if (confirmResult !== 'confirm') {
        this.$message.info('已取消删除');
      }

      const { data: res } = await this.$http.delete(`goods/${id}`);

      if (res.meta.status !== 200) {
        this.$message.error('删除失败');
      } else {
        this.$message.success('删除成功');
        this.getGoodsList();
      }
    },
    // 监听添加商品按钮触发的事件
    goAddpage() {
      this.$router.push('/goods/add');
    },
  },
};
</script>

<style lang="less" scope>
</style>